Amplifier circuit and power supply circuit for the focusing voltage comprising such an amplifier circuit

摘要

In an amplifier circuit, a first t1 and a second t2, t3 transistors as well as a load resistor r1 are mounted between the power supply terminals 1, 2. A terminal 3 receives an input signal comprising two components of a signal having, respectively, of frequencies relatively high and low in order to apply the said input signal to the second transistor. The base of the first transistor is decoupled by a capacitor c1, as in the high frequency, so that the first transistor amplifies the component has a high frequency, while the second transistor amplifies the component has a low frequency. / p & & p & this amplifier circuit can be incorporated in a power supply circuit for the focusing voltage for a device for reproduction of images. / p & & p & application: device for reproduction of images.